A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Sheep, goats, octopuses, and toads have rectangular pupils.
7
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
-12
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268